/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.apache.lucene.search;

import java.io.Serializable;

/** Holds one hit in {@link TopDocs}. */

public class ScoreDoc implements Serializable {

	public ScoreDoc() {
	}

	/**
	 * 
	 */
	private static final long serialVersionUID = 1L;

	/** The score of this document for the query. */
	public float score;

	/**
	 * A hit document's number.
	 * 
	 * @see IndexSearcher#doc(int)
	 */
	public int doc;

	/** Only set by {@link TopDocs#merge} */
	public int shardIndex;

	/** Constructs a ScoreDoc. */
	public ScoreDoc(int doc, float score) {
		this(doc, score, -1);
	}

	/** Constructs a ScoreDoc. */
	public ScoreDoc(int doc, float score, int shardIndex) {
		this.doc = doc;
		this.score = score;
		this.shardIndex = shardIndex;
	}

	// A convenience method for debugging.
	@Override
	public String toString() {
		return "doc=" + doc + " score=" + score + " shardIndex=" + shardIndex;
	}
}
